In order to address the problem of high slagging rate of corn straw combustion, mixing oil pine with less slagging feature and corn straw to produce the mixture combustion, using thermogravimetric analysis, SEM scanning and energy spectrometry, the effect of oil pine on the combustion characteristics of corn straw and slagging characteristics is studied. The results show that: there is a certain interaction during the combustion process of the oil pine-corn straw mixed fuel. As the temperature rises, it changes from inhibitory effect to synergistic effect, and then from strong synergistic effect to weak synergistic effect. When the mixing ratio of corn straw and oil pine is 4:6, the overall combustion characteristics are the best, the combustion temperature increases to 475.6 ℃, the stable combustion index increases to 8.9379×10^-6 mg/（K²·min） and the combined combustion characteristics index increases to 0.0929×10^-8 mg²/（K³·min²）, and the slagging rate decreases from 56.25% to 9.87% with the blower strength of 0.1 m/s, the slagging rate decreases by 82.45%, and the content of Si and Na, K alkali metal elements in the ash decreases from 46.42% to 29.93%. The addition of oil pine can significantly enhance the combustion characteristics of corn straw and effectively reduce the slagging rate.

oil pine  /  corn straw  /  biomass fuel  /  combustion characteristics  /  slagging rate